Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 5.414
IF5.414
IF 5-year value: 5.958
IF 5-year
5.958
CiteScore value: 9.7
CiteScore
9.7
SNIP value: 1.517
SNIP1.517
IPP value: 5.61
IPP5.61
SJR value: 2.601
SJR2.601
Scimago H <br class='widget-line-break'>index value: 191
Scimago H
index
191
h5-index value: 89
h5-index89
Download
Altmetrics
Preprints
https://doi.org/10.5194/acpd-13-11395-2013
https://doi.org/10.5194/acpd-13-11395-2013

  29 Apr 2013

29 Apr 2013

Review status: this preprint was under review for the journal ACP but the revision was not accepted.

Stratospheric SO2 and sulphate aerosol, model simulations and satellite observations

C. Brühl1, J. Lelieveld1,3, M. Höpfner2, and H. Tost4 C. Brühl et al.
  • 1Atmospheric Chemistry Department, Max-Planck-Institute for Chemistry, Mainz, Germany
  • 2Institute for Meteorology and Climate Research, Karlruhe Institute of Technology, Karlsruhe, Germany
  • 3The Cyprus Institute, Nicosia, Cyprus
  • 4Institute for Physics of the Atmosphere, Johannes Gutenberg University, Mainz, Germany

Abstract. A multiyear study with the atmospheric chemistry general circulation model EMAC with the aerosol module GMXe at high altitude resolution demonstrates that the sulfur gases COS and SO2, the latter from low-latitude volcanic eruptions, predominantly control the formation of stratospheric aerosol. The model consistently uses the same parameters in the troposphere and stratosphere for 7 aerosol modes applied. Lower boundary conditions for COS and other long-lived trace gases are taken from measurement networks, while estimates of volcanic SO2 emissions are based on satellite observations. We show comparisons with satellite data for aerosol extinction (e.g. SAGE) and SO2 in the middle atmosphere (MIPAS on ENVISAT). This corroborates the interannual variability induced by the Quasi-Biennial Oscillation, which is internally generated by the model. The model also realistically simulates the radiative effects of stratospheric and tropospheric aerosol including the effects on the model dynamics. The medium strength volcanic eruptions of 2005 and 2006 exerted a nonnegligible radiative forcing of up to −0.6 W m−2 in the tropics, while the large Pinatubo eruption caused a maximum though short term tropical forcing of about −10 W m−2. The study also shows that observed upper stratospheric SO2 can be simulated accurately only when a sulphur sink on meteoritic dust is included and the photolysis of gaseous H2SO4 in the near infrared is higher than assumed previously.

C. Brühl et al.

 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

C. Brühl et al.

C. Brühl et al.

Viewed

Total article views: 2,164 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
1,405 660 99 2,164 73 72
  • HTML: 1,405
  • PDF: 660
  • XML: 99
  • Total: 2,164
  • BibTeX: 73
  • EndNote: 72
Views and downloads (calculated since 29 Apr 2013)
Cumulative views and downloads (calculated since 29 Apr 2013)

Cited

Saved

Latest update: 20 Jan 2021
Publications Copernicus
Download
Citation
Altmetrics